class_docstr: Dictionary which uses normalized URIs as keys.
code: def normalize(self, uri):
      return urlsplit(uri).geturl()
  
imports: import itertools
  import json
  import pkgutil
  import re
  from jsonschema.compat import MutableMapping, str_types, urlsplit
label_desc: Use image node_id 1 for calling the URIDict obj's underlying member method code with example usage: obj.normalize(uri) and returns: urlsplit